The Evolutionary History Of Penguins Is Far From Black And White


The image of a penguin might bring to mind an endless march across windswept ice. The reality of penguins is a bit different says Grant Ballard of point blue conservation science was actually see species of Pangolin. Really, love, it's only two species. Many others live in warmer waters. So we're could conceivably dealing with something like minus seven degrees or even colder than out. Then, show, but lobby goes mainland has encountered temperatures that are up around one hundred degrees Fahrenheit. So how'd it penguins evolve with such different lifestyles and new study and the proceedings of the National Academy of Sciences has some answers we've been able to resolve. Several. Longstanding questions about penguin evolution in particular way penguins originated. Hurry Bowie of UC Berkeley as an author on that study. He says there's been a long debate about where the first penguins evolved was it Antarctica or farther north in New Zealand as others have suggested, well armed with genetic evidence from a species of modern day penguins his team has an answer which turned out to be along the coast of Australia and New Zealand the nearby islands of the South Pacific. They say that happened around twenty two million years ago from there, the penguin served on a circular current at the bottom of the world there is a clockwise current. And so they use this current colonized like. The region Juliana of the Catholic. University. Of Chile is a CO author. She says, eleven million years ago that current revved up and penguins used it to slingshot themselves throughout the Southern Hemisphere. That's right. slingshot. The researchers also observed genetic adaptations. Some penguins picked up along the way like the ability to drink seawater also changes in how some species use oxygen allowing them to dive deep that doesn't mean. Penguins will be quick to adapt to modern day climate change. Here's Valley. Again, this adaptation to being able to occurring freezing cold waters in tropical waters occurred over a period of twenty million years, and this doesn't mean that penguins are going to be able to keep up with oceans warming today. If there is one thing, the paper makes clear. It's that the evolution of penguins for from black and

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